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Full Pillar Extraction Coal Mining In South Africa

Home > Full Pillar Extraction Coal Mining In South Africa

Disclosed is a method of mining or extracting a support pillar from an underground room and pillar mining operation which includes forming by eg forming top and bottom wedge shaped cuts at least one removable segment in a pillar 7 and moving eg pulling the segment substantially intact from its original location 10a to a mining position 10c distal from its original location ...

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